CVE-2021-33655 — Out-of-bounds Write in Kernel

CWE-787 — Out-of-bounds Write50 documents10 sources
Severity
6.7MEDIUMNVD
OSV5.5
EPSS
0.0%
top 93.73%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
11
Linux KernelDebian LinuxDebian Linux+8 more
Timeline
PublishedJul 18
Latest updateFeb 14

Description

When sending malicous data to kernel by ioctl cmd FBIOPUT_VSCREENINFO,kernel will write memory out of bounds.

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:HExploitability: 0.8 | Impact: 5.9

Affected Packages13 packages

▶NVDlinux/linux_kernel< 5.19+1
▶Debianlinux/linux_kernel< 5.10.127-2+3
▶Ubuntulinux/linux_kernel< 4.15.0-193.204+3
▶CVEListV5linux/linux_kernel5.18 5.19.0-rc1

Also affects: Debian Linux 10.0, 11.0

Patches

Patch: www.openwall.com ↗Patch: git.kernel.org ↗Patch: www.openwall.com ↗

🔴Vulnerability Details

24
OSV
CVE-2021-33655: In fbcon_set_font() of fbcon↗2023-03-01
▶
OSV
linux-ibm vulnerabilities↗2022-10-14
▶
OSV
linux-gcp-5.4 vulnerabilities↗2022-10-06
▶
OSV
linux-intel-iotg vulnerabilities↗2022-10-04
▶
OSV
linux-gke vulnerabilities↗2022-10-04
▶

📋Vendor Advisories

25
Palo Alto
PAN-SA-2024-0001 Informational Bulletin: Impact of OSS CVEs in PAN-OS↗2024-02-14
▶
CISA ICS
Siemens SIMATIC S7-1500 TM MFP Linux Kernel↗2023-06-15
▶
Android
CVE-2021-33655: Frame Buffer↗2023-03-01
▶
Ubuntu
Linux kernel (IBM) vulnerabilities↗2022-10-14
▶
Ubuntu
Linux kernel (GCP) vulnerabilities↗2022-10-06
▶